Reflectivity in the cuff for visibility on the darkest of runs. Engineered with anatomical design and Targeted Compression, providing a Custom-Like Fit and reduced risk of blisters, plus Light cushioning for added impact protection. Targeted Compression and anatomical design provide an unmatched Custom-Like Fit. High density cushioning provides cushioned comfort without the bulk. Anatomical design enhances fit, delivering maximum comfort and protection by eliminating blisters. The Perfect Toe®. (No irritating toe seam.) 5" cuff is perfect for trail running or cycling 95% Nylon 5% Spandex Machine wash cold. Tumble dry. No bleach or fabric softeners. For best results, wash socks inside out.